166 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



SCLERURUS CANIGULARIS Ridgway. 



GRAY-THROATED SCLERURUS. 



Adults {sexes alike). — Pileum deep to dark sepia (sometimes lighter 

 and browner on forehead), the feathers sometimes indistinctly margined 

 with dusky; back, scapulars, and wing-coverts plain deep warm-sepia 

 or Vandyke brown, passmg into chestnut on rump and upper tail- 

 coverts, the wing-coverts inclining to chestnut or margined with that 

 color; tail dark seal brown basally, passing into brownish black ter- 

 minally; remiges dark sepia brown, the primary coverts more dusky; 

 chin and throat light mouse gray, deeper on lower throat, paler 

 (sometimes inclining to dull white) on chin; chest (broadly) dark 

 dull cinnamon-rufous or tawny-chestnut; rest of under parts dark 

 grayish brown or brownish slate color, tinged or suffused with tawny- 

 chestnut, the under tail-coverts inclining to chestnut, mth concealed 

 portion dusky; maxilla brownish black, passing into horn color ter- 

 minally; mandible dull pale yellowish or whitish (in dried skins), 

 dusky along tomia; legs and feet dusky horn color (in dried skins). 



Young. — Similar to adults but general color of upper parts more 

 castaneous (less strongly contrasted with chestnut of rump and upper 

 tail-coverts) and color of chest duller (between mummy brown and 

 Vandyke). 



Adult male.— Length, (skins), 151-168 (158); whig, 86-93 (89.2); 

 tail, 58.5-62.5 (60.4) ; culmen, 21.5-22.5 (22.4); tarsus, 22-22.5 (22.2); 

 middle toe, 18-19.5 (18.6). « 



Adult female.— Length (skhis), 140-166 (155); wmg, 85-89 (86.8); 

 tail, 57-60.5 (58.6); culmen, 21.5-24 (22.2); tarsus, 21-22.5 (21.8); 

 middle toe, 17.5-19 (18.6).« 



Costa Rica (Turrialba; Cariblanco de Sarapiqui; Tenorio; Buena 

 Vista; Cerro Santa Maria) and western Panama (Boquete). 



Sclerurus canignlaris Ridgway, Proc. U. S. Nat. Mus., xi, sig. 34, Sept. 20, 1889, 



542 (Turrialba, Costa Rica; coll. U. S. Nat. Mus.); xii, 1890, 24 (monogr.); 



xvi, 1893, 613 (Buena Vista, Costa Rica; crit.). — Zeledon, Anal. Mus. Nac. 



Costa Rica, i, 1887, 114.— Sclater, Ibis, 1889, 354 (crit.).— Salvin and 



GoDMAN, Biol. Centr.-Am., Aves, ii, 1891, 166.— Bangs, Proc. New Engl. 



Zool. Club, iii, 1902, 45 (Boquete, Panamd, 5,600-5,800 ft.).— Carriker, 



Ann. Carnegie Mua., vi, 1910, 645 (Costa Rica; crit.). 

 [Sclerurus] canigularis Sharpe, Hand-list, iii, 1901, 72. 

 Sclerurus alhigiilaris (not S. albognJaris Swainson) Sclater, Cat. Birds Brit. Mus., 



XV, 1890, 114, part (in synonymy). 



SCLERURUS MEXICANUS MEXICANUS Sclater. 



MEXICAN SCLERURUS. 



Adults (sexes alike). — Above plain deep warm-sepia bro\\Ti (some- 

 times approaching prouts or Vandyke brown), duller and rather 



o Six specimens. 



